I have two bikes that I'd like to build into one.

I have two bikes that I'd like to build into one. One has Shimano 105>parts (rd-1050, SIS rear derailer) (1987?). The 105 parts have been>used and have some dings and dents on them, but seem to work okay. I>have another bike (frame too small for me) that has Shimano 600 parts>(1984?) (fd-6207, rd-6208, brakes-6208). These parts don't look used at>all and just need a little cleaning.>

Both bikes have down tube shifters (indexed). I'd like to install bar>end shifters, which ones work with these derailers?>

Which componant group is better quality?>

Can I increase the speed from a 7 to and 8 or 9? if so what should I>look for in new gears?>

Thanks for the help in advance.

You can use the present shifters and convert them to bar ends->

http://www.rivbike.­com/webalog/shifters­_derailleurs/17068.h­tml>

I don't have any experience with 600 stuff. The couple of 105 rear> derailleurs I've gotten on used bikes had seemed pretty worn. I'd go> with the parts with the least wear all in all, whatever series.>

http://www.sheldonb­rown.com/k7.html#up7­>